import type { HydrationEntry, HydrationSummary } from "../types.js";
export interface LogWaterInput {
    timestamp?: string;
    amount_ml: number;
    source?: HydrationEntry["source"];
    notes?: string;
}
export declare function logWater(input: LogWaterInput): Promise<HydrationEntry>;
export declare function listWaterEntries(filter?: {
    date?: string;
}): Promise<HydrationEntry[]>;
export declare function deleteWaterEntry(id: string): Promise<boolean>;
export declare function clearHydrationDay(date: string): Promise<{
    date: string;
    deleted_entries: number;
}>;
export declare function buildHydrationSummary(date?: string): Promise<HydrationSummary>;